AAC 转 WAV - 在线免费转换
在浏览器里直接把 .aac 转成 .wav。文件不上传，免登录，转完即下载。
What is AAC?
Advanced Audio Coding (.aac) — AAC is the successor to MP3, offering better sound quality at similar bitrates. It is the default audio format for Apple devices, YouTube, and many streaming services.
What is WAV?
Waveform Audio File Format (.wav) — WAV is an uncompressed audio format developed by Microsoft and IBM. It preserves the original audio quality without any loss, making it the standard for professional audio production.
AAC vs WAV
| Feature | AAC | WAV |
|---|---|---|
| Full Name | Advanced Audio Coding | Waveform Audio File Format |
| Compression | Lossy | Lossless |
| Typical Bitrate | 128-256 kbps | 1,411 kbps (CD quality) |
| Best For | Apple devices, streaming services, mobile audio | Audio editing, music production, archiving master recordings |
| File Extension | .aac | .wav |
Frequently Asked Questions
Is converting AAC to WAV free?
Yes, completely free. The conversion runs entirely in your browser using WebAssembly — your files never leave your device and no sign-up is required.
Will I lose audio quality converting AAC to WAV?
Converting from lossy AAC to lossless WAV will not restore lost audio data, but it will preserve the existing quality without further degradation.
What is the maximum file size?
You can convert audio files up to 100MB. Since the conversion happens in your browser, processing speed depends on your device's performance.
Is my audio file uploaded to a server?
No. All format conversion is processed locally in your browser using FFmpeg WebAssembly. Your files never leave your device, ensuring complete privacy.